Standard liquid ends:
Interval
Maintenance work
Personnel
Quarterly*
n
Check the metering diaphragm for damage** - refer to
"Repair".
n
Check that the hydraulic lines are fixed firmly to the
liquid end.
n
Check that the suction valve and discharge valve are
fitted tightly.
n
Check the tightness of the entire liquid end - particularly
around the leakage hole - refer to
Ä
‘Standard liquid
ends:’ on page 29
!
n
Check that the flow is correct: Allow the pump to prime
briefly - turn the multifunctional switch briefly to "Test"
n
Check that the electrical connections are intact.
n
Check the integrity of the housing.
n
Check that the dosing head screws are tight.
Technical personnel
* Under normal loading (approx. 30 % of continuous operation)
Under heavy loading (e.g. continuous operation): Shorter intervals.
** Check the diaphragm frequently with feed chemicals that put particular pressure on the dia‐
phragm, e.g. those containing abrasive additives.
P_ALP_0011_SW
Fig. 7: Leakage hole
Maintenance
29
Summary of Contents for alpha ALPc 0230
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